Dybowski, Cecil - University of Delaware - Department of Chemistry & Biochemistry

研究领域

Research in the Dybowski group provides insight into fundamental NMR properties of materials, the effects of electronic configuration, and the relationship of spectroscopic parameters to physical structure. The information provides a basis for understanding the structure and functional relationships in complex systems such as pure crystalline solids, mixed solids, and the surface phase on heterogeneous catalysts. The studies conducted in the group range from theoretical underpinnings of NMR spectroscopy to applications of the technology to understanding materials problems as diverse as the action of heterogeneous catalysts, the degeneration of art objects, the response to stress of solids, and the association of ions in solution.

近期论文

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Dybowski, C. Nuclear Magnetic Resonance and Electron Spin Resonance. An Introduction. In Encyclopedia of Analytical Chemistry; Meyers, R. A., Ed.; John Wiley: Chichester, England, 2010; DOI: 9780470027318.a6101.pub2. Bai, S.; Wang, W.; Dybowski, C. Solid-State NMR Spectroscopy. Anal. Chem. 2010, 82, 4917 – 4924. Liu, W.; Wang, W. D.; Wang, W.; Bai, S.; Dybowski, C. Measurement of the Principal Values of the Chemical-Shift Tensors of Overlapped Protonated and Unprotonated Carbons with the 2D-SUPER Technique and Dipolar Dephasing (DD-SUPER), J. Magn. Reson. 2010, 206, 177 – 181. Liu, W.; Wang, W. D.; Wang, W.; Bai, S.; Dybowski, C. Influence of Structure on the Spectroscopic Properties of the Polymorphs of Piroxicam. J. Phys. Chem. B 2010, 114, 166141 – 16649. Glatfelter, A.; Bai, S.; Dmitrenko, O.; Perry, D. L.; van Bramer, S. E.; Dybowski, C. Solid-State 207Pb Nuclear Magnetic Resonance Studies of Adducts of 1,10-Phenanthroline with Lead(II) Halides. Canad. J. Chem. 2011, 89, 863 - 869. Taylor, R. E.; Bai, S.; Dybowski, C. A Solid-State 199Hg NMR Study of Mercury Halides. J. Mol. Struct. 2011, 987, 193 – 198. Dybowski, C.; Teplyakov, A. V. Essential Data and Equations for a Course in Physical Chemistry; D & T Publishing: Newark, Delaware, 2011. Morris, W.; Taylor, R. E.; Dybowski, C.; Yaghi, O.; Garcia-Garibay, M. A. Framework Mobility in the Metal-Organic Framework Crystal IRMOF-3: Evidence for Aromatic Ring and Amine Rotation. J. Mol. Struct. 2011, 1004, 94 – 101. Wang, W. D.; Gao, X.; Strohmeier, M.; Wang, W.; Bai, S.; Dybowski, C. Solid-State NMR Studies of Form I of Atorvastatin Calcium. J. Phys. Chem. 2012, 116, 3641 - 3649. Morris, W.; Taylor, R. E.; Dybowski, C.; Yaghi, O, M,; Garcia-Garibay, M. A. NMR and X-ray Study of Zeolitic Imidazolate Frameworks (ZIFs). J. Phys. Chem. C 2012, 116, 13307 – 13312. Taylor, R.E.; Alkan, F.; Koumoulis, D.; Lake, M.P.; King, D.; Dybowski, C.; Bouchard, L.-S. A Combined NMR and DFT Study of Narrow Gap Semiconductors: The Case of PbTe. J. Phys. Chem. C 2013, 117, 8959 – 8967. Dybowski, C.; Glatfelter, A.; Cheng, H. N. 13C Magnetic Resonance Methods. In Elsevier Reference Module in Chemistry, Molecular Sciences and Engineering; Reedijk, J., Ed.; Elsevier: Waltham, MA, 2013; doi: 10.1016/B978-0-12-409547-2.05008-5. Catalano, J.; Yao, Y.; Murphy, A.; Zumbulyadis, N.; Centeno, S. A.; Dybowski, C. NMR Spectra and 207Pb Chemical-Shift Tensors of Lead Carboxylates Relevant to Soap Formation in Oil Paintings. Appl. Spectrosc. 2014, 68, 280 – 287. Catalano, J.; Yao, Y.; Murphy, A.; Zumbulyadis, N.; Centeno, S. A.; Dybowski, C. Analysis of Lead Carboxylates and Lead-containing Pigments in Oil Paintings by Solid State Nuclear Magnetic Resonance. In Materials Issues in Art and Archaeology X; Vandiver, P., Li, W., Sciau, P., Maines, C., Eds.; Materials Research Society: Warrendale, Pennsylvania, 2014; pp Taylor, R. E.; Beckmann, P. A.; Bai, S.; Dybowski, C. 127I and 207Pb Solid-State NMR Spectroscopy and Nuclear Spin Relaxation in PbI2: A Preliminary Study. J. Phys. Chem. C 2014, 118, 9143 – 9153. Alkan, F.; Dybowski, C. Calculation of Chemical-Shift Tensors of Heavy Nuclei: A DFT/ZORA Investigation of 199Hg Chemical Shift Tensors in Solids, and the Effects of Cluster Size and Electronic-State Approximations. Phys. Chem. Chem. Phys 2014, 16, 14298 – 14308. Catalano, J.; Murphy, A.; Yao, Y.; Alkan, F.; Zumbulyadis, N.; Centeno, S. A.; Dybowski, C. 207Pb and 119Sn Solid-State NMR and Relativistic DFT Studies of the Historic Pigment Lead-Tin Yellow Type I. J. Phys. Chem. 2014, 118, 7952 – 7958. Catalano, J.; Yao, Y.; Murphy, A.; Zumbulyadis, N.; Centeno, S. A.; Dybowski, C. Analysis of Lead Carboxylates and Lead-Containing Pigments in Oil Paintings by Solid-State Nuclear Magnetic Resonance. Proceedings of the Materials Science and Technology, Pittsburgh, Pennsylvania, USA, October 12 – 16, 2014; pp 2161 – 2168. Holmes, S. T.; Iuliucci, R. J.; Mueller, K. T.; Dybowski, C. Density Functional Investigation of Intermolecular Effects on 13C NMR Chemical-Shielding Tensors Modeled With Molecular Clusters. J. Chem. Phys. 2014, 141, 164121. Catalano, J.; Murphy, A.; Yap, Y.; Yap, G. P. A.; Zumbulyadis, N.; Centeno, S. A.; Dybowski, C. Coordination Geometry of Lead Carboxylates – Spectroscopic and Crystallographic Evidence. J. Chem. Soc., Dalton Transactions 2014, submitted.